Edited Mars Reconnaissance Orbiter image of inverted terrain in Eridania Basin.

Edited Mars Reconnaissance Orbiter image of a fan of debris on the floor of a crater north of Argyre Planitia.

Edited Mars Reconnaissance Orbiter image of ancient lakebeds in Holden Crater on Mars.

Original caption: Holden Crater was once filled by at least two different lakes. The sediments deposited in those lakes are relatively light-toned where exposed in this observation from NASA's Mars Reconnaissance Orbiter.

Edited Mars Reconnaissance Orbiter PR image of a rocky surface in Holden Crater with very fine layers. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of a crater's central peak on Mars. Color variant.

Edited Mars Reconnaissance Orbiter image of Ladon Valles.

Edited Mars Reconnaissance Orbiter image of light-toned outcroppings in Aureum Chaos.

Edited Mars Reconnaissance Orbiter image of a concentric dome out in the middle of no where (well, that's not true - it's in Utopia Planitia). Color variant.

Edited Mars Reconnaissance Orbiter image of pretty blue (at least in the released images from NASA as well as how I processed them) sand dunes on top of ridges on Mars. Color/processing variant.

Edited Mars Reconnaissance Orbiter context PR image of a crater with a very bumpy, lumpy floor.

Edited Mars Reconnaissance Orbiter image of slopes and valleys.

Edited Mars Reconnaissance Orbiter image of "bizarre TARs" or aoelian sand dunes.

Edited Mars Reconnaissance Orbiter image of a sand dune field over layers of bedrock on Mars. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of landforms in Coprates Montes.

Edited Mars Reconnaissance Orbiter image of Saheki Crater.

Edited Mars Reconnaissance Orbiter image of an exhumed crater in Meridiani Planum. NASA-provided cropped image. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of gullies in a crater in the Martian northern hemisphere.

This image shows a sequence of predominantly light-toned, layered, sedimentary rocks exposed by erosion on the floor of Terby Crater. Terby Crater is ~165 kilometers (~100 miles) in diameter. It's located on the northern rim of the Hellas impact basin in the southern hemisphere of Mars. The layered sequence is ~2 kilometers (~1.2 miles) thick and consists of many repetitive, relatively horizontal beds. The beds appear to be laterally continuous, which means you can identify a given layer in many locations across the area.

Edited Mars Reconnaissance Orbiter image of stair-step terrain in Arabia Terra.

Edited Mars Reconnaissance Orbiter image of a layered landform in a crater in Nilosyrtis Mensae.

Edited Mars Reconnaissance Orbiter image of a recent "candidate" (meaning, "never mind - it's real") impact crater on Mars.

Edited Mars Reconnaissance Orbiter image of sand dunes on Mars. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of sand dunes on Mars (looking a lot like sand dunes in Africa). Color/processing variant.

Edited Mars Reconnaissance Orbiter image of slopes being monitored for changes on Mars. Red channel version.

Edited Mars Reconnaissance Orbiter image of landforms on Mars.

Edited Mars Reconnaissance Orbiter image of sand dunes in Arabia Terra.

Edited Mars Reconnaissance Orbiter image of a possible site for human exploration on Mars in Noachis Terra.

Edited Mars Reconnaissance Orbiter image of a ridge network in Hellas Planitia on Mars. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of a crater whose slopes are being monitored for changes.

Edited Mars Reconnaissance Orbiter image of carbon dioxide frost on sand dunes on Mars. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of an active scarp (meaning lots of landslides) in the Martian north polar region.

via Facebook ift.tt/2tcbnt1

Edited Mars Reconnaissance Orbiter image of gullies and exposed colors. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of a circular crack on the surface of Mars. Processing variant.

The dark branched features in the floor of Antoniadi Crater look like giant ferns, or fern casts. However, these ferns would be several miles in size and are composed of rough rocky materials. A more likely hypothesis is that this represents a channel network that now stands in inverted relief. The channels may have been lined or filled by indurated materials, making the channel fill more resistant to erosion by the wind than surrounding materials. After probably billions of years of wind erosion the resistant channels are now relatively high-standing. The material between the branched ridges has a fracture pattern and color similar to deposits elsewhere on Mars that are known to be rich in hydrated minerals such as clays.

Edited Mars Reconnaissance Orbiter image of a crater on Mars whose slopes are being monitored for gully formation (a sign that something slide down the crater wall).

Edited Mars Reconnaissance Orbiter image of two craters in eastern Margaritifer Terra.

Edited Mars Reconnaissance Orbiter image of reticulate terrain in north west Hellas Planitia. Color variant.

Edited and cropped Mars Reconnaissance Orbiter image of an ice-filled crater in the northern plains of Mars. Inverted grayscale variant.

Edited Mars Reconnaissance Orbiter image of a recent impact crater on Mars. Cropped, color/processing variant.

Edited and cropped Mars Reconnaissance Orbiter image of an ice-filled crater in the northern plains of Mars.

Edited Mars Reconnaissance Orbiter image of sand dunes and mesas in Iani Chaos on Mars.

Edited Mars Reconnaissance Orbiter image of sand dunes in lines on Mars.

Edited Mars Reconnaissance Orbiter image of a lava cone with craters (from meteorite strikes) in Noctis Fossae.

Edited Mars Reconnaissance Orbiter image of a fractured surface near Athabasca Valles lava.

Edited Mars Reconnaissance Orbiter image of teardrop defrosting on sand dunes on Mars.

Edited Mars Reconnaissance Orbiter image of part of Nectaris Montes.

Edited Mars Reconnaissance Orbiter image of part of Nectaris Fossae on Mars.

Edited Mars Reconnaissance Orbiter image of a pit crater on the side of Pavonis Mons. Color variant.

Edited Mars Reconnaissance Orbiter image of a crater whose slopes are being monitored for changes. Color variant.